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SELECT 
  b.variant_name, 
  a.* 
FROM 
  cscart_product_option_variants AS a 
  LEFT JOIN cscart_product_option_variants_descriptions AS b ON b.variant_id = a.variant_id 
  AND b.lang_code = 'en' 
WHERE 
  1 
  AND a.option_id IN (148, 1596, 1128, 1129) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00766

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "read_sorted_file": {
          "filesort": {
            "sort_key": "a.position, a.variant_id",
            "table": {
              "table_name": "a",
              "access_type": "range",
              "possible_keys": ["status", "option_id", "option_id_2"],
              "key": "option_id",
              "key_length": "6",
              "used_key_parts": ["option_id", "status"],
              "rows": 11,
              "filtered": 100,
              "index_condition": "a.option_id in (148,1596,1128,1129) and a.`status` = 'A'"
            }
          }
        }
      },
      {
        "table": {
          "table_name": "b",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["variant_id", "lang_code"],
          "ref": ["dev_db.a.variant_id", "const"],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "trigcond(b.lang_code = 'en')"
        }
      }
    ]
  }
}

Result

variant_name	variant_id	option_id	position	modifier	modifier_type	weight_modifier_type	point_modifier_type	status
Flower wood candle base	187	148	0	120000.000	A	A	A	A
	4154	1596	0	0.000	A	A	A	A
Tealight set (4 Flower candle set)	2729	1128	1	0.000	A	A	A	A
White lotus	2731	1129	1	0.000	A	A	A	A
	4153	1596	1	0.000	A	A	A	A
Tealight set (4 Decor candle set)	2730	1128	2	0.000	A	A	A	A
Ylang Ylang	2732	1129	2	0.000	A	A	A	A
Grapefruit	2733	1129	3	0.000	A	A	A	A
Green tea - White tea	2734	1129	4	0.000	A	A	A	A
Coffee - Wood	2735	1129	5	0.000	A	A	A	A
Floral - Herb	2736	1129	6	0.000	A	A	A	A