Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1be71062de460b882d88bd7160784a21df97c576f45b6f3a7d7f8a9e8161790' 
  AND token = 'gVlN+vAd0fYo8ZqZaY0G/wKwuDlWHv5veN36ukeOdbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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