A Body Lost Trunk Key

DO NOT pound a screwdriver into the lock cylinder. Only idiots do that stuff.

Get a locksmith to open the trunk. Call around and find someone willing to do it for a reasonable price. It is easy for them to do, like a few minutes of time. Bonus if you can drive the car to them.

I was at a tow auction and a locksmith could make a key on a few minutes. He put a key black in vice grips, put in lock and wiggled side to side then looked at and filed on the key. About 5 times and the key worked. Friggen amazing.