Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5aa28d471fb4c030ca13713b92de1312ea979fd9fd295952bce19cbf7ab96036' 
  AND token = 'AsAK5RmV7O6jjaOB3kub8eJSp+odCsFy5o7zcPX+yjo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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