Macgasm put up a nice little post showing how to skip straight to the “Updates” page in the Mac App Store. It opens and is ready SOO much faster if that is all you want to do is check for updates.
Bonus: Alfred users, set the url as a custom search to open it quickly.
I work hard and spend a lot of time on the Alfred extensions I've created. I make a lot of custom extensions for users as well. I really enjoy helping the Alfredapp team and all of its awesome users. Any donations you want to send my way for any of the work I've done would be greatly apperciated