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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 (1147) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00083

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "18.90"
    },
    "ordering_operation": {
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "a",
            "access_type": "ref",
            "possible_keys": [
              "status",
              "option_id",
              "option_id_2"
            ],
            "key": "option_id",
            "used_key_parts": [
              "option_id",
              "status"
            ],
            "key_length": "6",
            "ref": [
              "const",
              "const"
            ],
            "rows_examined_per_scan": 27,
            "rows_produced_per_join": 27,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "6.75",
              "eval_cost": "2.70",
              "prefix_cost": "9.45",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "variant_id",
              "option_id",
              "position",
              "modifier",
              "modifier_type",
              "weight_modifier",
              "weight_modifier_type",
              "point_modifier",
              "point_modifier_type",
              "status",
              "note_required"
            ]
          }
        },
        {
          "table": {
            "table_name": "b",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "cscartdb.a.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 27,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "6.75",
              "eval_cost": "2.70",
              "prefix_cost": "18.90",
              "data_read_per_join": "20K"
            },
            "used_columns": [
              "variant_id",
              "lang_code",
              "variant_name"
            ]
          }
        }
      ]
    }
  }
}

Result

variant_name	variant_id	option_id	position	modifier	modifier_type	weight_modifier_type	point_modifier_type	status
18mm/ 0.71 Inch	20402	1147	1	0.000	A	A	A	A
20mm/ 0.79 Inch	20403	1147	2	0.000	A	A	A	A
22mm/ 0.87 Inch	20404	1147	3	0.000	A	A	A	A
25 mm/ 0.98 inch	20405	1147	4	0.000	A	A	A	A
28 mm/ 1.10 inch	20406	1147	5	0.000	A	A	A	A
30 mm/ 1.18 inch	20407	1147	6	10.000	A	A	A	A
34 mm/ 1.32 inch	20408	1147	7	20.000	A	A	A	A
36 mm/ 1.42 inch	20409	1147	8	30.000	A	A	A	A
38 mm/ 1.50 inch	20410	1147	9	40.000	A	A	A	A
40 mm/ 1.57 inch	20411	1147	10	50.000	A	A	A	A
44 mm/ 1.73 inch	20412	1147	11	60.000	A	A	A	A
46 mm/ 1.81 inch	20413	1147	12	70.000	A	A	A	A
48 mm/ 1.89 inch	20414	1147	13	80.000	A	A	A	A
50 mm/ 1.97 inch	20415	1147	14	90.000	A	A	A	A
52 mm/ 2.04 inch	20416	1147	15	100.000	A	A	A	A
54 mm/ 2.13 inch	20417	1147	16	110.000	A	A	A	A
56mm / 2.20 mm	20418	1147	17	120.000	A	A	A	A
58 mm/ 2.28 inch	20419	1147	18	140.000	A	A	A	A
60mm/ 2.36 inch	20420	1147	19	160.000	A	A	A	A