WHAT determines the speed of select command in this case?

Hi experts.

I have a select

    SELECT * UP TO me_mass_rep-me_number_of_headers ROWS

      FROM ztcrpin

      INTO CORRESPONDING FIELDS OF TABLE crpin

        WHERE lgort in ('LVUT','MOBI','CLIE')

        AND status  EQ 'DEPS'

        AND statun  EQ 'ATIV'

        ORDER BY lotechk.

This 'select' takes more than 15 minutes to fetch data , The time limit in PRODUCTION is 15 minutes then:DUMP.

I want know :

Many conditions 'where' causes more delay?

    WHERE lgort in ('LVUT','MOBI','CLIE')

        AND status  EQ 'DEPS'

        AND statun  EQ 'ATIV'

        ORDER BY lotechk.

Do you think good idea to select with less the conditions  and delete  then by 'range' after?

this table  ztcrpin has 4000.000 records.

Thanks for help.