1030 - Got error 28 from storage engine

select p.products_model, pd.products_name, p.products_image, pd.products_short_description, p.products_shippingtime, p.products_id from products_description pd, products_to_categories p2c, products p where p.products_status = '1' and p.products_id = p2c.products_id and pd.products_id = p2c.products_id and pd.language_id = '1' and p2c.categories_id = '524' and p.products_type != 'productvariant' ORDER BY p.products_sort ASC

[XT SQL Error]