Sandbox

SELECT 
  b.variant_name, 
  a.*, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier, 
    a.modifier
  ) as modifier, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier_type, 
    a.modifier_type
  ) as modifier_type 
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' 
  LEFT JOIN cscart_ult_product_option_variants shared_option_variants ON shared_option_variants.variant_id = a.variant_id 
  AND shared_option_variants.company_id = 1 
WHERE 
  1 
  AND a.option_id IN (24, 25, 26, 27, 28, 29) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "shared_option_variants",
      "access_type": "system",
      "possible_keys": ["PRIMARY", "company_id"],
      "rows": 0,
      "filtered": 0,
      "const_row_not_found": true
    },
    "read_sorted_file": {
      "filesort": {
        "sort_key": "a.position, a.variant_id",
        "table": {
          "table_name": "a",
          "access_type": "ALL",
          "possible_keys": ["status", "option_id", "option_id_2"],
          "rows": 14,
          "filtered": 85.7142868,
          "attached_condition": "a.option_id in (24,25,26,27,28,29) 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": ["intels7_intels7db.a.variant_id", "const"],
      "rows": 1,
      "filtered": 100,
      "attached_condition": "trigcond(b.lang_code = 'en')"
    }
  }
}

Result

variant_id	option_id	position	modifier	modifier_type	weight_modifier	weight_modifier_type	point_modifier_type	status
68	24	0	0.000	A	0.000	A	A	A
72	25	0	0.000	A	0.000	A	A	A
75	26	0	0.000	A	0.000	A	A	A
79	27	0	0.000	A	0.000	A	A	A
82	28	0	0.000	A	0.000	A	A	A
86	29	0	0.000	A	0.000	A	A	A
67	24	1	23.400	A	23.400	A	A	A
73	25	1	9.000	A	0.000	A	A	A
74	26	1	37.000	A	37.000	A	A	A
80	27	1	9.000	A	0.000	A	A	A
81	28	1	56.500	A	56.500	A	A	A
87	29	1	9.000	A	0.000	A	A	A