optimize TIMESTAMPDIFF in mysql query

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I need help optimizing a query for large data table when I test manually it shows fast , but in my slow query log it is logged as taken 10s+ for some reason .

SELECT  q.id, q.village_id, q.to_player_id, q.to_village_id,
        q.proc_type, TIMESTAMPDIFF(SECOND, NOW(),q.end_date) remainingTimeInSeconds
    FROM table

I expect to output the results that's time is ended , meaning time left must be 0 or less , in ASC order .

it order by the end time itself ,because when we have many attacks we must arrange them according to which attack suppose to arrive first ,then process them one by one



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