If raiser is from EP, I fold A10 100% of the time (KQo is about at the bottom of the range and we aren't a huge favorite). If raiser is in MP, I fold 90% and reraise 10% if he is known to try to steal the blinds from far away. Same thing for LP. To cold-call a raise preflop, you need a monster hand (JJ, QQ) and even then, I'll probably play back at him if I'm alone with him if I have such hands.
Cold-calling a preflop raise with AT OOP is almost never a good idea in a cash game since villain's range includes a strong ace plus two broadway, plus any med to high pair and we're small favorites to huge underdogs to his range. Unless you guys are both deep and you plan on calling the flop only if you flop two pairs or top pair, you are giving away implied odds
by doing so.
Even a crappy hand such as QJo isn't that big of a dog to you since if a Q or J shows up, you need to spike an A to stay alive.