50-1 against this being the problem, but just check it, cause it'* simple.
Check the button on your shifter. Make sure the leather from the handle hasn't pinched in it and is holding it half in/out.
If you put it in Park and the button isn't fully released, it'* going to give you problems with the key.
For some reason, this has been like a theft deterrent in my '98 SSEi. It happens to just about everybody who drives the car who isn't me. If one of the kids sneaks the car out for the night.... I don't catch them when the go, I catch them when they come back.
Because they're sitting in the car screaming and spit,... because the key is caught in the ignition.
1995 SE ..Green and Rattle Can...234K mi...Bonnie (she'll outlive me)
1998 SSEI .. White ..119K mi...Evey
1996 SSE ..MajTeal..157K mi...4/12- Dealer trade full of Lucas Trans fix