You don't want to BUST the lock.
First off, find out if it's possible to get to the backside of the lock from inside the cabinet.
The coin holder part of the cabinet USUALLY has a shield behind it to prevent this, but you want to check first.
If you can get to the lock, just unscrew the center screw, and the lever that holds the door should come free.
If that doesn't work, you will need to drill it out.
Your objective is to go straight through the center of the lock, and hit the screw on the back that holds the lever that keeps the door closed.
Start with a fairly small drill bit, and work your way up until the door opens.
Be careful not to get off center though, or you will make your life much more difficult by missing the screw on the back.