Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f73629f023f3d18eb45dc4c70f9750f960a525f11ccae075b3b541850dae1b24' 
  AND token = 'EXjsvru9cVcEGltOaYwNX7L9IU+Mntr6pXrzvEcibVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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