SELECT 
  cscart_ab__preload_links.* 
FROM 
  cscart_ab__preload_links 
WHERE 
  1 
  AND cscart_ab__preload_links.status = 'A' 
ORDER BY 
  cscart_ab__preload_links.url asc

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.00345856,
    "nested_loop": [
      {
        "read_sorted_file": {
          "filesort": {
            "sort_key": "cscart_ab__preload_links.url",
            "table": {
              "table_name": "cscart_ab__preload_links",
              "access_type": "ref",
              "possible_keys": ["status"],
              "key": "status",
              "key_length": "3",
              "used_key_parts": ["status"],
              "ref": ["const"],
              "loops": 1,
              "rows": 1,
              "cost": 0.00345856,
              "filtered": 100,
              "index_condition": "cscart_ab__preload_links.`status` = 'A'",
              "attached_condition": "cscart_ab__preload_links.`status` <=> 'A'"
            }
          }
        }
      }
    ]
  }
}