Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb5ab92ec481e97b097f425a90138c8da14c2e6c912601605449f475d09f0f18' 
  AND token = 'aPm+dodaA0f/Zc7y5qFYFIvSgCwnMco0DlfesPe9oWI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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