How do you plan on changing a flat if you don't have keys to the locks? Plus, all you did was installed new pads. You should have cleaned and lubricated the bolts/pins that attach the caliper. The caliper is supposed to slide on those bolts/pins. If it doesn't move freely, the pads will remain in contact with the rotor causing the squealing noise. Do yourself a favor and either get new keys or remove the locks and buy new ones. The way you did this, you'll be back messing with those pads again in no time.
Appreciate the input my guy I jus bought the car a week ago I didn’t even pay attention that wheels had locks on them until the other day when I went to change the pads😂 I had a old set but that key was different so i jus went dis route pins were greased tho no issues there but going with drilled rotors soon and they guy I bought the car from jus sent the key in the mail today and I will have it Monday