SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (348, 441, 1506, 987, 446, 438)

Query time 0.00136

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 6,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (348,441,1506,987,446,438)"
    }
  }
}

Result

product_id product_code product_type status company_id list_price amount weight length width height shipping_freight low_avail_limit timestamp updated_timestamp usergroup_ids is_edp edp_shipping unlimited_download tracking free_shipping zero_price_action is_pbp is_op is_oper is_returnable return_period avail_since out_of_stock_actions localization min_qty max_qty qty_step list_qty_count tax_ids age_verification age_limit options_type exceptions_type details_layout shipping_params facebook_obj_type parent_product_id yml2_brand yml2_origin_country yml2_store yml2_pickup yml2_delivery yml2_adult yml2_delivery_options yml2_bid yml2_cbid yml2_fee yml2_model yml2_sales_notes yml2_type_prefix yml2_offer_type yml2_market_category yml2_manufacturer_warranty yml2_expiry yml2_purchase_price yml2_description yml2_cpa buy_now_url external_id update_1c ab__stickers_manual_ids ab__stickers_generated_ids coloristica_id allow_fractional_amount product_amount_step sale_type my_supplier_id supplier_amount manufacturer_code supplier_access_count rf_stop_update_price rf_stop_update_amount rf_stop_update_status rf_cost gr__fe09_pickup_options
348 45 P A 1 0.00 0 11.000 0 0 0 0.00 0 1605094399 1741946245 0 N N N B N R N N N Y 10 0 S 1 0 0 0 7,10 N 0 P F default a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:1;s:10:"box_length";i:22;s:9:"box_width";i:22;s:10:"box_height";i:200;} 0 N a:0:{} 0 0 0 0 Y 45 Y 33,31 45 1 0 0 0 Y N N 0.00 a:0:{}
438 71956 P A 1 0.00 237 1.000 0 0 0 0.00 0 1606574166 1721048401 0 N N N B N R Y N N Y 10 0 S 0 0 0 0 7,10 N 0 P F default a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:1;s:10:"box_length";i:7;s:9:"box_width";i:30;s:10:"box_height";i:40;} 0 N a:0:{} 0 0 0 0 Y 71956 Y 30 N 0 0 0 0 N N N 0.00 a:0:{}
441 71954 P A 1 0.00 165 1.000 0 0 0 0.00 0 1606574166 1721048401 0 N N N B N R Y N N Y 10 0 S 0 0 0 0 7,10 N 0 P F default a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:1;s:10:"box_length";i:7;s:9:"box_width";i:30;s:10:"box_height";i:40;} 0 N a:0:{} 0 0 0 0 Y 71954 Y 31 N 0 0 0 0 N N N 0.00 a:0:{}
446 70393 P A 1 16434.00 0 8.000 0 0 0 0.00 0 1608656150 1734686866 0 N N N B N R Y N N Y 10 0 S 0 0 0 0 7,10 N 0 P F default a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:1;s:10:"box_length";i:18;s:9:"box_width";i:18;s:10:"box_height";i:160;} 0 N a:0:{} 0 0 0 0 Y 70393 Y 34,35,31 N 0 0 0 0 N N N 0.00 a:0:{}
987 71246 P A 1 0.00 363.68 0.500 0 0 0 0.00 0 1608801871 1741937501 0 N N N B N R Y N N Y 10 0 S 0 0 0 0 7,10 N 0 P F default a:5:{s:16:"min_items_in_box";i:1;s:16:"max_items_in_box";i:1;s:10:"box_length";i:6;s:9:"box_width";i:6;s:10:"box_height";i:160;} 0 N a:0:{} 0 0 0 0 Y 71246 Y 0 0 0 0 Y N N 0.00 a:0:{}
1506 71941 P A 1 0.00 527.21 0.000 0 0 0 0.00 0 1615884662 1738050316 0 N N N B N R Y N N Y 10 0 S 0 0 0 0 7,10 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N a:0:{} 0 0 0 0 Y 71941 Y 0 0 0 0 Y N N 0.00 a:0:{}