The locks basically move a rod, that opens the door.
If you slide a 1 or 2 mm flat rod with a hook down the outside of the window glass, you can move the rods and open the doors.
e other way of doing it is to take the front or rear screen out and move the inside black plastic locks with a broom handle.
Failing that, you need to drill both sides of the lock in the door through all the little tumblers with a 1/8" or 3mm drill, and then you can rotate the lock normally with a screw driver.
Or you could get the key code from Andy at Lotus records, if all the problem is no keys.