The most common and most likely answer to this crossword clue is the 3 plus 3 plus 7 letter word FOR THE PRESENT
I've seen this crossword clue in Independent
F
O
R
T
H
E
P
R
E
S
E
N
T
More clues leading to the result FOR THE PRESENT
Buddy explains!

The straight part
We know that "now" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case now = for the present.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.