Where would the wheel lock be?

I am trying to take off my wheel, (some noise, probably the brake) and I need to have my wheel lock to unlock the wheel. I have 1993 Acura Integra LS. I have no idea what it looks like or where it would be, I have the general wrench and some other things that are with the spare wheel, but i don't see anything that would unlock that lock bolt. Any help? :disappoin

if you can't find the wheel lock "key" than you need to take it to a tire shop (ie firestone, sears, les schawb, discount tires, etc) and have them take the lugs off