Missing key in keyboard

Hi, I was given an IPad Air for last Christmas and I was also given a magnet keyboard. After a couple months o f using it, one day I noticed of an individual key was missing. I’m not sure if it fell or someone took but overall I can’t find it. Also meaning I have a missing key on my board, it was the ecs key. I really don’t like the fact that I can’t find it or fix it. Is it possible that I can buy a single separate key to replace it. I use it on a daily and I don’t want to buy a whole other keyboard, i have ocd and seeing my incomplete board really bothers me.