Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6075d81b18097a7ffb7e9ee7980a1b67c6ec9390f93c753db7e15e61a42847fc' 
  AND token = '23nrCC7bsdvloXWWMq4BjGNCc96fw5NTlPxsg8TO6Dc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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