Like a shot at home and can't stand having consumed second (2,5)
I believe the answer is:
in haste
'like a shot' is the definition.
(both mean very quickly)
'home and can't stand having consumed second' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'and' says to put letters next to each other.
'can't stand' becomes 'hate' (if you hate something you can't stand it).
'having consumed' means one lot of letters goes inside another.
'second' becomes 's' (common abbreviation).
'hate' enclosing 's' is 'haste'.
'in'+'haste'='IN HASTE'
'at' acts as a link.
(Other definitions for in haste that I've seen before include "''Marry . . . . . . ., repent at leisure'' (2, 5)" , "Quickly" , "Rapidly" , "Hurriedly" , "Rushing round" .)