Do you have a heuristic for differentiating big rushes from small rushes? I think any time you are trying to perform a task, and some epsilon greater than zero of your conscious capacity is focusing on the ticking clock, then that represents a deficit from maximal focus. I think the deep breathing advice is good for any rush.

https://intelligence.org/files/CognitiveBiases.pdf in part 8 has a note on time pressure increasing the effect of the affect heuristic, but it doesn't quite fit with what you are talking about (fumbling for keys).