Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '962acb7725dfbbb93b0a81ad98b14f377f69571ec6589de22a958818d4268388' 
  AND token = 'OhIrTfLhGr5nDaeeHd/16pxdsfZqKoX9sJCd9eElg1Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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