Yes, there is, the Plaza Premium Lounge. But it's not free - you'll have to pay money to get in (*Gold won't do anything for you here). Having said that, I'm fairly certain it will be quieter. If memory serves, this lounge is after passport control (the check in area at the LCCT can be a zoo).

Here's the link: http://www.lcct.com.my/plaza_premium_lounge_at_lcct.php