Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '886893f9e124cf90f8175cf174a79a487743e77af43f44a905fd24675c193b67' 
  AND token = 'nUH91DGbbhNy3oOzn3Gcdm/rF9VYq2qg3a6gRWyDgfg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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