Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40b4fc96a9ab7d63621da9d98f339bf37a502af62f584f0a28c55c52a13b9ba1' 
  AND token = 'NDV1A8wiYXtcAG2xO0GkhkvJdaHvngolUN+utN/e5h8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00083

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}