SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (15947, 15949, 15950)

Query time 0.00042

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": 3,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (15947,15949,15950)"
    }
  }
}

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 fiscal_data_1212 mark_code_type parent_product_id yml2_brand yml2_origin_country yml2_store yml2_pickup yml2_delivery yml2_adult yml2_delivery_options yml2_bid 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 units_in_product show_price_per_x_units source_import_key is_stock_split_by_warehouses ab__stickers_manual_ids ab__stickers_generated_ids allow_fractional_amount product_amount_step sale_type
15947 1111115 P A 1 0.00 3 0.000 0 0 0 0.00 0 1666370446 1776154757 0 N N N B N R Y N N Y 10 0 B 0 0 7 N 0 P F 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;} 1 0 N a:0:{} 0 0 Y 0.000 1.000 N N 0
15949 1111118 P A 1 0.00 2 0.000 0 0 0 0.00 0 1666371333 1776154757 0 N N N B N R Y N N Y 10 0 B 0 0 7 N 0 P F 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;} 1 0 N a:0:{} 0 0 Y 0.000 1.000 N N 0
15950 1111119 P A 1 0.00 2 0.000 0 0 0 0.00 0 1666371477 1776154757 0 N N N B N R Y N N Y 10 0 B 0 0 7 N 0 P F 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;} 1 0 N a:0:{} 0 0 Y 0.000 1.000 N N 0