SELECT 
  category_to_id 
FROM 
  cscart_ble_category_redirects 
WHERE 
  category_from_url = 'products.quick_view?product_id=64942&prev_url=index.php%3Fdispatch%3Dcategories.view%26category_id%3D1918&n_items=63755,62252,62253,62254,64941,64942,64943,64815,65519'

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_ble_category_redirects",
      "access_type": "ALL",
      "rows": 81,
      "filtered": 100,
      "attached_condition": "cscart_ble_category_redirects.category_from_url = 'products.quick_view?product_id=64942&prev_url=index.php%3Fdispatch%3Dcategories.view%26category_id%3D1918&n_items=63755,62252,62253,62254,64941,64942,64943,64815,65519'"
    }
  }
}