Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76587640f5cbc8caa7dd71730b5feb907e26a1b4e7307ed831a21761bc8ed77f' 
  AND token = '7w2ujKK2mFqaNIHtYQOZW1jUMNmlEkk68TXT9wH3GME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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