I couldn't turn the key on my 96 Surf (4runner) to the "Acc" position and remove the key, after the car sent for an interior wash. It is an autobox and I suspect dirts could have got into the switch at "P" position. Would you think it is posible?

 

I would check the fuses first and then maybe the tumbler assembly.
And if you are lucky you are in the acc position the first stop after key removal position(turning clockwise). If so just remove the panel around the switch area find the little brass pin (usually at the bottom) and remove the whole tumbler assemby. Check the internals with a screw driver should be a slot inside where you removed the tumbler (be carefull this will start the vehicle) if this turns ok clean the tumbler that should be in your hand. wd or any solvent style cleaner and then follow up with graphite messy but it is the ultimate lock lube. Once you have lubed inside the housing with graphite try it again.

 

Try shifting slowly from P to L then back. then try to turn the key and remove it.