The key is located surgically inside your eye socket so to get it you have to cut your eye
If you hesitate
The metal mask with metal pins on it closes causing immediate death
Reverse beartrap
The key is located inside an alive person's intestines.You have to cut his stomach to get it.if the time runs out the trap goes off and snaps your jaw
Bedroom trap
You are put on a bed
You either choose to sacrifice your eye (letting a scythe gouge it out)
Or hesitate which leads to the scythes pulling your limbs out