я так понимаю тормозит вот этот запрос к БД:
# Query_time: 10.080542 Lock_time: 0.000317 Rows_sent: 1 Rows_examined: 8658109
SET timestamp=1504433254;
SELECT
min(coalesce((SELECT price FROM oc_product_discount pd2 WHERE pd2.product_id = p.product_id AND pd2.customer_group_id = '1' AND pd2.quantity = '1' AND ((pd2.date_start = '0000-00-00' OR pd2.date_start < NOW()) AND (pd2.date_end = '0000-00-00' OR pd2.date_end > NOW())) ORDER BY pd2.priority ASC, pd2.price ASC LIMIT 1),
(SELECT price FROM oc_product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '1' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC, ps.price ASC LIMIT 1), p.price)) AS price_min,
max(coalesce((SELECT price FROM oc_product_discount pd2 WHERE pd2.product_id = p.product_id AND pd2.customer_group_id = '1' AND pd2.quantity = '1' AND ((pd2.date_start = '0000-00-00' OR pd2.date_start < NOW()) AND (pd2.date_end = '0000-00-00' OR pd2.date_end > NOW())) ORDER BY pd2.priority ASC, pd2.price ASC LIMIT 1),
(SELECT price FROM oc_product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '1' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC, ps.price ASC LIMIT 1), p.price)) AS price_max
FROM oc_product p
LEFT JOIN oc_product_option_value pov ON (pov.product_id = p.product_id)
LEFT JOIN oc_product_to_category p2c ON (p2c.product_id = p.product_id)
LEFT JOIN oc_product_to_store p2s ON (p2s.product_id = p.product_id)
WHERE p.status = '1'
AND p2c.category_id = '2'
AND p.date_available <= NOW()
AND p2s.store_id = '0';
# Time: 170903 14:18:59
Подскажите, как можно поправить?
Версия ocStore 2.1.0.2.1