sticky ignition
There's a sensor next to the auto gear shift lever that determines that the car is in park and 'releases' the key. It may be out of adjustment. To get at it, remove the console bezel by first taking off the console lid; then pull up the rug and remove the 2 screws near the front of the console interior; there is one (or more?) screws under the 'change' tray beside the gear shift. Once all the screws are out, put the car into a low gear, lift the back of the bezel up and pull the bezel up and back (no need to pull it over the gear shift knob). The gear sensor will be visible on the driver's side of the gear shift. Mine had a frayed (eventually broken) wire. When reassemblying, take care to align the gear indicator correctly and note that the console lid has depressions at the screw holes that allow it to be aligned easily with the hinge. There are a lot of old threads on how to remove the console bezel (cover). You can search with the 'search' tab above in case I've forgotten some of the screw locations.
Hope this helps.
PS Don't put any lubricant in the key hole. See my embarassing post.