After a moment passes donkey something unhealthy to take in (6-4,5)

'after a' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'moment passes donkey something unhealthy to take in' is the wordplay.
I cannot really understand how this works, but
'moment' could be 'second' (synonyms) and 'second' is located in the answer.
'passes' could be 'hands' ('hand' can be a synonym of 'pass') and 'hands' is found within the answer.
'donkey' could be 'moke' (moke can informally mean a donkey) and 'moke' is found within the answer.
No letters remain.
This explanation may well be incorrect...

Can you help me to learn more?