SELECT 
  tax_id, 
  address_type, 
  priority, 
  price_includes_tax, 
  regnumber 
FROM 
  cscart_taxes 
WHERE 
  tax_id IN (7) 
  AND status = 'A' 
ORDER BY 
  priority

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_taxes",
      "access_type": "const",
      "possible_keys": ["PRIMARY", "c_status"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["tax_id"],
      "ref": ["const"],
      "rows": 1,
      "filtered": 100
    }
  }
}