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SELECT 
  sd.param_id, 
  sd.param, 
  cscart_static_data_descriptions.descr, 
  sd.param_2, 
  sd.param_3, 
  sd.param_4, 
  sd.param_5, 
  sd.param_6, 
  sd.status, 
  sd.position, 
  sd.parent_id, 
  sd.id_path, 
  sd.class 
FROM 
  cscart_static_data AS sd 
  LEFT JOIN cscart_static_data_descriptions ON sd.param_id = cscart_static_data_descriptions.param_id 
  AND cscart_static_data_descriptions.lang_code = 'fr' 
WHERE 
  sd.section = 'A' 
  AND sd.status = 'A' 
  AND sd.param_5 = '2' 
ORDER BY 
  sd.position

Query time 0.00062

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "10.86"
    },
    "ordering_operation": {
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "sd",
            "access_type": "ref",
            "possible_keys": [
              "section"
            ],
            "key": "section",
            "used_key_parts": [
              "section",
              "status"
            ],
            "key_length": "6",
            "ref": [
              "const",
              "const"
            ],
            "rows_examined_per_scan": 23,
            "rows_produced_per_join": 2,
            "filtered": "10.00",
            "index_condition": "((`ea201_francemaqu`.`sd`.`section` <=> 'A') and (`ea201_francemaqu`.`sd`.`status` <=> 'A'))",
            "cost_info": {
              "read_cost": "3.50",
              "eval_cost": "0.46",
              "prefix_cost": "8.10",
              "data_read_per_join": "14K"
            },
            "used_columns": [
              "param_id",
              "param",
              "param_2",
              "param_3",
              "param_4",
              "param_5",
              "section",
              "status",
              "position",
              "parent_id",
              "id_path",
              "class",
              "param_6"
            ],
            "attached_condition": "(`ea201_francemaqu`.`sd`.`param_5` = '2')"
          }
        },
        {
          "table": {
            "table_name": "cscart_static_data_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "param_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "ea201_francemaqu.sd.param_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 2,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "2.30",
              "eval_cost": "0.46",
              "prefix_cost": "10.86",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "param_id",
              "lang_code",
              "descr"
            ]
          }
        }
      ]
    }
  }
}

Result

param_id	param	descr	param_2	param_3	param_4	param_5	param_6	status	position	id_path
66		PROMOS		C:453:Y		2	N	A	0	66
47		Nouveautés maquettes		C:116:Y		2		A	1	47
38		Avions	Maquettes Avions	C:5:Y	right	2		A	2	38
35		Voitures		C:9:Y	right	2		A	2	35
67		Camions		C:110:Y		2		A	3	67
68		Maquettes bois 3D		C:463:Y		2		A	4	68
37		Maquettes bois		C:87:Y	right	2		A	5	37
44		Bateaux		C:14:Y		2		A	6	44
39		Maquettes militaires		C:2:Y	right	2		A	6	39
36		Motos		C:11:Y	right	2		A	7	36
34		Peintures		C:36:Y	right	2		A	8	34
33		Outils, accessoires		C:23:Y	right	2		A	9	33
43		Figurines		C:17:Y		2		A	10	43
45		Décors		C:21:Y		2		A	10	45
70		Puzzles et Maquette 3D		C:451:Y		2	N	A	20	70
41	http://www.france-maquette.fr/maquettes-kits-complets.html	KITS		C:32:N		2		A	30	41
40		Maquettes à Thème		C:114:Y		2		A	31	40
48		Premières maquettes		C:119:Y		2		A	40	48
42		Maquettes adultes		C:0:N		2		A	50	42
71		TOUTES LES MAQUETTES		C:0:N		2	N	A	50	71
29	index.php?dispatch=sitemap.view	Plan du site			right	2	N	A	70	29