SELECT 
  product_review_id 
FROM 
  cscart_product_reviews 
  LEFT JOIN cscart_users ON cscart_product_reviews.reply_user_id = cscart_users.user_id 
  LEFT JOIN cscart_companies ON cscart_users.company_id = cscart_companies.company_id 
  LEFT JOIN cscart_country_descriptions ON cscart_product_reviews.country_code = cscart_country_descriptions.code 
  AND cscart_country_descriptions.lang_code = 'en' 
WHERE 
  1 
  AND cscart_product_reviews.product_id IN (146) 
  AND cscart_product_reviews.status = 'A' 
GROUP BY 
  cscart_product_reviews.product_review_id

Query time 0.00359

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "457.60"
    },
    "grouping_operation": {
      "using_temporary_table": true,
      "using_filesort": false,
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_product_reviews",
            "access_type": "ALL",
            "rows_examined_per_scan": 49,
            "rows_produced_per_join": 0,
            "filtered": "2.04",
            "cost_info": {
              "read_cost": "6.43",
              "eval_cost": "0.10",
              "prefix_cost": "6.53",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "product_review_id",
              "product_id",
              "country_code",
              "reply_user_id",
              "status"
            ],
            "attached_condition": "((`mobikul_delivery_boy_livedemo`.`cscart_product_reviews`.`product_id` = 146) and (`mobikul_delivery_boy_livedemo`.`cscart_product_reviews`.`status` = 'A'))"
          }
        },
        {
          "table": {
            "table_name": "cscart_users",
            "access_type": "ALL",
            "rows_examined_per_scan": 9,
            "rows_produced_per_join": 8,
            "filtered": "100.00",
            "using_join_buffer": "hash join",
            "cost_info": {
              "read_cost": "0.60",
              "eval_cost": "0.90",
              "prefix_cost": "8.03",
              "data_read_per_join": "65K"
            },
            "used_columns": [
              "user_id",
              "company_id"
            ],
            "attached_condition": "<if>(is_not_null_compl(cscart_users), (`mobikul_delivery_boy_livedemo`.`cscart_users`.`user_id` = `mobikul_delivery_boy_livedemo`.`cscart_product_reviews`.`reply_user_id`), true)"
          }
        },
        {
          "table": {
            "table_name": "cscart_companies",
            "access_type": "ALL",
            "rows_examined_per_scan": 2,
            "rows_produced_per_join": 17,
            "filtered": "100.00",
            "using_join_buffer": "hash join",
            "cost_info": {
              "read_cost": "0.52",
              "eval_cost": "1.80",
              "prefix_cost": "10.35",
              "data_read_per_join": "111K"
            },
            "used_columns": [
              "company_id"
            ],
            "attached_condition": "<if>(is_not_null_compl(cscart_companies), (`mobikul_delivery_boy_livedemo`.`cscart_companies`.`company_id` = `mobikul_delivery_boy_livedemo`.`cscart_users`.`company_id`), true)"
          }
        },
        {
          "table": {
            "table_name": "cscart_country_descriptions",
            "access_type": "ALL",
            "rows_examined_per_scan": 248,
            "rows_produced_per_join": 4463,
            "filtered": "100.00",
            "using_join_buffer": "hash join",
            "cost_info": {
              "read_cost": "0.86",
              "eval_cost": "446.40",
              "prefix_cost": "457.60",
              "data_read_per_join": "1M"
            },
            "used_columns": [
              "code",
              "lang_code"
            ],
            "attached_condition": "<if>(is_not_null_compl(cscart_country_descriptions), ((`mobikul_delivery_boy_livedemo`.`cscart_country_descriptions`.`code` = `mobikul_delivery_boy_livedemo`.`cscart_product_reviews`.`country_code`) and (`mobikul_delivery_boy_livedemo`.`cscart_country_descriptions`.`lang_code` = 'en')), true)"
          }
        }
      ]
    }
  }
}