Is this an easy call?

Just my view but I would call if it is less that 2% of your total poker bankroll. If its going to hurt your bankroll you should pass as there are a lot of hands that you're not big favourite against on that flop, and you're not pot committed. Personally I would play QQ in 2 ways.

Re-Raise and pass if he goes all in, move in-on flop if he just calls (most players will put you on AK when you Re-raise them)

Call and check call all the way down (unless you hit a set or an A or K flops)

This way you will minimise your losses and maximise your winnings.

QQ is only a pair and has much less equity in a cash game that a tournement (as people will oftern call with suited connectors and marginal hands to outdraw you using Implied Odds as a reason for playing badly).

Read Doyle Brunsons Supersystem again ( I always refer to it again and again, its so simple), the chapter on playing hold'em cash, he always advocated betting into the raiser when you think you are ahead, then you would not have been faced with this "call all-in" decision. You would have bet, he would have raised with AT, and you would have moved all-in, putting the decision on him (this often prevents players making moves on you will big drawing hands that will hit 30% - 65% of the time and bust you).

Another point, I would always lead out betting into the raiser, in the long time you will get paid more. If you have a big hand and bet it, nobody will put you on a big hand, if you choose to check raise, decent players will even pass overpairs against you.