so my parents bought me a 2005 Scion tC

, but when they gave me the keys i noticed it was missing the two master keys (the ones that have the remote buttons built into the actual key) and i was only given the one gray key with the scion logo on it. i also read that it was supposed to come with a steel plaque on the key ring so i can go have copies made. i bought this car at a used car dealership, not at a toyota dealership. so i want to know if it is still possible for me to buy these remote keys. if i were to lose this one, i wouldnt be able to use my car anymore. it is also a hassle to have to walk all the way up to my car and turn the key to lock and unlock my car. i havent gone to a toyota dealership yet so idk il go there the next time i service my car i guess. but thank you in advance for the help