I had a meat bird hen that we kept and she lived to be two or three. I think she was similar to a cornish rock, meant to grow very fast. She was very heavy and I don't know that she laid to many eggs but she had a happy life.
She did die of a heart attack though

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We also had a rooster that was the same kind of meat bird. he lived to be at least two or three also, but he was so mean that we had to kill him. I'm pretty sure he would have lived longer if we hadn't. He would do all kinds of bad stuff, the biggest thing I remember is him chasing my 3-5 year old brother around.
Good luck with your chick, I hope he/she has a good life, even if it's only two or three years long. Do you know if it's a he or she?