Performance issue with select query

Hi,

i have a performance issue with below query...its taking lots of time to execute.

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We have a selection screen with Idoc creation date field only, so screen should allow user the enter startdate and end date of idoc received.

SELECT docnum status direct credat mestyp idoctp

FROM edidc

INTO CORRESPONDING FIELDS OF TABLE i_edidc

WHERE status = '53' AND

direct = '2' AND

credat IN s_credat AND

mestyp = 'CREMAS' AND

idoctp = 'CREMAS03'.

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Pls review and suggest me, how we can improve the performance.