locking lug nut??

I got my truck about a month ago. I traveled almost 3 hours to get it. Today, my father was looking at it and noticed it has a locking lug nut on each wheel. He went searching through my glove compartment for a tool but nothing. He said right now im screwed if I popped a tire. Is this a factory toyota thing, or something the previous owner did? Should I call the dealer?

 

Mine came from the facotry like that. I think the key was under or behind the backseats

 

Mine was in the glovebox

Look behind / under the back seats , if not there call the dealer

 

Did you find it?

 

Mine was in the bag with the lug nut wrench and jack handles. Zip tied to the lug wrench.

 

It should be attached to the lug wrench with a plastic clip, which is in the lug wrench tool bag under the rear seat.