Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f007488f68282b5c46941ddb258bc12ea7c3b936af323f415cdc8810eeccc4d' 
  AND token = 'p6TGVOEdi9U/G7K9i73/hFOkaUnACD1T7CsACmsDfpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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