Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd204e83b9eede29dd3bd7f752858bf903ec86312a36a3e8aa7d76b084de6c15b' 
  AND token = 'yMbqJS95kFAqUx8Q7Stdg3ArK3kqYMaz0RwfQHwFP/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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