Why doesn't my car key work anymore?

Ok this may sound very odd but my spare Honda Accord 2012 key got left in a pot and put into a pottery kiln and baked at a couple thousand degrees. It still goes into the ignition and turns on my car and engine but then the engine turns off, why does this happen and how do I get this fixed for generally cheap

I think that has an anti-theft detection system. Hate to say it, but you'll likely need a new fob, which I think runs around $90.

I would imagine it is not the car key that is the significant issue here, but something with the car's engine in general or just the car. Since I'm not of age to drive a car, i wouldn't know where to get it fixed where it would be considerably cheap, but i'd ask around to friends who have recently had work done on their car or even in the last few years.

The key has a microchip that tells the cars computer to keep running. You fried the chip.