Very quickly (2,2,4)
'very quickly' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for in no time that I've seen before include "Very rapidly, hardly measurable" , "Without delay, too quick to measure" , "Immediately" , "Very rapidly - but sounds impossible?" , "Very quickly" .)
(Other definitions for fast that I've seen before include "Rapid; firm" , "debauched" , "Quick - don't eat" , "Abstain from food/drink" , "Speedily - secured" .)