Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb3fe25199f5f2fd881ccfd6ed1adcc222418351cb2e53fee798309b72651238' 
  AND token = 'X2blavWwpyuPQPHrgTaAhgcMyffKHTAfLLaxK09mJKU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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