Yeah, that sounds about right. The former has a reasonable degree of specificity, such that I can clearly identify both goal (open the door) and approach (picking the lock). Picking a lock is a pretty specific action, and leaves little room for ambiguity as to what the character is doing. The latter is very clear in communicating a goal, but is too vague in terms of approach. “Checking for traps” is not a specific action.
Here’s a good general rule of thumb: if you mistakenly tried to phrase an action as a goal, and struggled to come up with an approach to it (e.g. “I try to pick the lock by... umm... picking it... with lockpicks?” or “I try to beat him at arm wrestling by... umm... wrestling him... with my arm?”) then the action is already reasonably specific. But if you can think of multiple ways you might be able to do perform the action - for instance, you could check the hall for traps by looking for anything out of the ordinary, or by probing the floor in front of you with a 10-foot poll, or by throwing a rock down the hall, or any number of other things... Then it’s not reasonably specific as an approach. You’re going to have to commit to one of those methods for me to be able to properly adjudicate it.