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 (9, 2, 1, 10) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00053

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "27.31"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "15.50"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "shared_option_variants",
            "access_type": "system",
            "possible_keys": [
              "PRIMARY",
              "company_id"
            ],
            "rows_examined_per_scan": 0,
            "rows_produced_per_join": 1,
            "filtered": "0.00",
            "const_row_not_found": true,
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "0.20",
              "prefix_cost": "0.00",
              "data_read_per_join": "24"
            },
            "used_columns": [
              "variant_id",
              "company_id",
              "modifier",
              "modifier_type"
            ]
          }
        },
        {
          "table": {
            "table_name": "a",
            "access_type": "ALL",
            "possible_keys": [
              "status",
              "option_id",
              "option_id_2"
            ],
            "rows_examined_per_scan": 32,
            "rows_produced_per_join": 15,
            "filtered": "48.44",
            "cost_info": {
              "read_cost": "5.61",
              "eval_cost": "3.10",
              "prefix_cost": "8.71",
              "data_read_per_join": "744"
            },
            "used_columns": [
              "variant_id",
              "option_id",
              "position",
              "modifier",
              "modifier_type",
              "weight_modifier",
              "weight_modifier_type",
              "point_modifier",
              "point_modifier_type",
              "status"
            ],
            "attached_condition": "((`atulecarter_atul_demo5`.`a`.`option_id` in (9,2,1,10)) and (`atulecarter_atul_demo5`.`a`.`status` = 'A'))"
          }
        },
        {
          "table": {
            "table_name": "b",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "atulecarter_atul_demo5.a.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 15,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "3.10",
              "prefix_cost": "11.81",
              "data_read_per_join": "11K"
            },
            "used_columns": [
              "variant_id",
              "lang_code",
              "variant_name"
            ]
          }
        }
      ]
    }
  }
}

Result

variant_name	variant_id	option_id	position	modifier_type	weight_modifier_type	point_modifier_type	status
Black/White/White	17	9	0	A	A	A	A
Dark Navy/White/White	18	9	0	A	A	A	A
White/Prime Green	19	9	0	A	A	A	A
GreyHeather/Core Energy	36	10	0	A	A	A	A
Cardinal/PRIME YELLOW	37	10	0	A	A	A	A
Fairway/White	38	10	0	A	A	A	A
White	1	1	10	A	A	A	A
Small	6	2	10	A	A	A	A
Black	5	1	20	A	A	A	A
Medium	10	2	20	A	A	A	A
Blue	4	1	30	A	A	A	A
Large	9	2	30	A	A	A	A
Red	3	1	40	A	A	A	A
X Large	8	2	40	A	A	A	A
Green	2	1	50	A	A	A	A
XX Large	7	2	50	A	A	A	A
Yellow	11	1	60	A	A	A	A