EXPLAIN EXTENDED
select *
FROM b_sale_basket_props
WHERE
  BASKET_ID IN (
    SELECT ID
    FROM b_sale_basket
    WHERE
      FUSER_ID IN (
        SELECT b_sale_fuser.id
        FROM b_sale_fuser
        WHERE
          b_sale_fuser.DATE_UPDATE < '2017-12-13 12:13:22'
          AND b_sale_fuser.USER_ID IS NULL
      ) AND ORDER_ID IS NULL
  )
LIMIT 2000;

EXPLAIN EXTENDED
delete
FROM b_sale_basket_props
WHERE
  BASKET_ID IN (
    SELECT ID
    FROM b_sale_basket
    WHERE
      FUSER_ID IN (
        SELECT b_sale_fuser.id
        FROM b_sale_fuser
        WHERE
          b_sale_fuser.DATE_UPDATE < '2017-12-13 12:13:22'
          AND b_sale_fuser.USER_ID IS NULL
      ) AND ORDER_ID IS NULL
  )
LIMIT 2000;