SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (2636, 2638, 2637)

Query time 0.00033

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 (2636,2638,2637)"
    }
  }
}

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
2636 75124 P A 1 0.00 1 0.000 0 0 0 0.00 0 1737699857 1744894443 0 N N N B N R Y N N Y 10 0 N 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 75124 Y 0 0 0 75124 0 Y N N 0.00 a:0:{}
2637 75125 P A 1 0.00 1 0.000 0 0 0 0.00 0 1737700066 1744894446 0 N N N B N R Y N N Y 10 0 N 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 75125 Y 0 0 0 75125 0 Y N N 0.00 a:0:{}
2638 75126 P A 1 0.00 1 0.000 0 0 0 0.00 0 1737700200 1744894439 0 N N N B N R Y N N Y 10 0 N 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 75126 Y 0 0 0 75126 0 Y N N 0.00 a:0:{}