The key code for coin lock is listed inside the coin drop case. I had to use a Electrical Flexible Camera to gain the code on the sticker on inside the coin drop case which I accessed through the timer access panel. Then I called the manufacturer of the Coin Drop (I think SDI in Fort Washington, Pa.) give them the code and they made me 2 new keys for under $50.
Or you can drill them out but defeating the purpose and spend $200.++ replacing them. FYI just my experience!