SELECT 
  commercial_id, 
  commercial 
FROM 
  cscart_commerciaux

Query time 0.00012

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_commerciaux",
      "access_type": "ALL",
      "rows": 15,
      "filtered": 100
    }
  }
}