Buying a new oven (range) for kitchen - do they make 'child safe' ones?

We are looking for a new oven for the kitchen, but can't seem to find any information on how 'child safe' each one is...ideally I'd love one with a 'lock oven door' button on top. I've searched the internet and all I can find is attachements to go on after you've purchased one. Am I looking for something that doesn't exist?