Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95f3cadb88b510d82fecb1f441d91185781f1df9b6744ad44a78f57ed756ea99' 
  AND token = '89C/PDzx5zva/4Ym1IEVpbmj/sPV+BFVN0s9bHi8Svo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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