Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '288c459cd19e00ff84e079c70c5f732818487676fe1045edddb73478289c74fb' 
  AND token = 'j0LJsIqSkr0RH3VkgBSktokFNQUuDHJZNdji0wCrX8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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