He actually was handed a set of keys in his right hand (left on screen), but they were a completely different set of keys and didn't include the key that he was handed in his left hand (right on screen). He soon realized that the key in his left hand would probably unlock the rest of the large padlocks securing his wrists and ankles to the Chairor of Terror, so he later tried to pass the key from his left hand to his right hand, which you can see in the fifth pic in this post, and also in the video. You can also see there that his hands were nowhere near being able to touch each other because of the added restraint that I used on his left upper arm. ;-)

That being said, what would you try next if you were in his predicament?