1993 Saturn SL1 battery keeps draining

That noise ur hearing is probably ur door lock actuator staying on.next time that noise happens get out of the car and look at ur driverside door lock cyclinder see if it's turned to the left or right instead of being straight up and down.if it's turn to the left or right then that's why ur door lock actuator is staying on.when the cyclinder gets worn or ur key gets worn it allows ur key to come out when the cyclinder is left or right instead of just straight up.allow the actuator to stay on.let me know what u find.

I checked the key hole, door lock on the outside of the car like you suggested and it is slanted to the right. What do I do now?

There's a switch on the door lock cyclinder when it's left or right it will keep the door lock actuator on.u can just make sure it's straight up every time.or u can start by having a new key made at the Saturn dealer they will make a fresh key instead of copying the old worn out one.if the new key doesn't come out in the left or right postion it's fixed.if not then u will have to replace the tumblars in the cyclinder or replace the whole cyclinder.let me know what u find.