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SELECT 
  cscart_products.*, 
  cscart_products.ebay_status, 
  cscart_products.ebay_template_id 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    21101, 21102, 21103, 21104, 21105, 21106, 
    21107, 21108, 21109, 21110, 21111, 
    21112, 21113, 21114, 21115, 21116
  )

Query time 0.00029

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": 16,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (21101,21102,21103,21104,21105,21106,21107,21108,21109,21110,21111,21112,21113,21114,21115,21116)"
    }
  }
}

Result

product_id	product_code	product_type	status	company_id	weight	timestamp	updated_timestamp	is_edp	edp_shipping	unlimited_download	tracking	free_shipping	is_pbp	is_op	is_oper	is_returnable	return_period	out_of_stock_actions	tax_ids	age_verification	show_price_per_x_units	purchase_qty	social_proof_popup_product_output	is_stock_split_by_warehouses	package_type	ebay_override_price	is_invoice	ei_status	cp_extended_marketing_prohibit_review
21101	86694T6000	P	A	1	0.700	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	5	Y	N	Letter	N	N	unpaid	N
21102	866C9T6000	P	A	1	0.300	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	30	Y	N	Letter	N	N	unpaid	N
21103	86695T6000	P	A	1	0.700	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	90	Y	N	Letter	N	N	unpaid	N
21104	866C0T6000	P	A	1	0.300	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	80	Y	N	Letter	N	N	unpaid	N
21105	91880T6040	P	A	1	0.800	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	49	Y	N	Letter	N	N	unpaid	N
21106	924A3T6010	P	A	1	2.000	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	86	Y	N	Letter	N	N	unpaid	N
21107	924A4T6010	P	A	1	2.000	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	92	Y	N	Letter	N	N	unpaid	N
21108	1249306257E	P	A	1	0.050	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	75	Y	N	Letter	N	N	unpaid	N
21109	81784B1000	P	A	1	0.050	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	31	Y	N	Letter	N	N	unpaid	N
21110	86811T6000	P	A	1	35.000	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	89	Y	N	Letter	N	N	unpaid	N
21111	86812T6000	P	A	1	35.000	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	85	Y	N	Letter	N	N	unpaid	N
21112	86821T6000	P	A	1	35.000	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	92	Y	N	Letter	N	N	unpaid	N
21113	86822T6000	P	A	1	35.000	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	6	Y	N	Letter	N	N	unpaid	N
21114	1351004006K	P	A	1	0.200	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	49	Y	N	Letter	N	N	unpaid	N
21115	81820T6000CA	P	A	1	0.600	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	66	Y	N	Letter	N	N	unpaid	N
21116	861142L000	P	A	1	0.400	1715937452	1721911507	N	N	N	N	N	N	N	N	Y	14	B	9	N	1.000	27	Y	N	Letter	N	N	unpaid	N