Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bbd7c9f227464004d49445329711bd01131d26ad4b4331adb963bbd790c4199' 
  AND token = 'oi4lvMfI4nKoa7nsRVGMLDjnBnI0fJXqiTCLTt1H2VE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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