Sandbox

SELECT 
  redirect_id, 
  src, 
  type, 
  object_id, 
  dest, 
  lang_code 
FROM 
  cscart_seo_redirects 
WHERE 
  src = '/movies-and-tv/blu-ray-discs/harry-potter-and-the-deathly-hallows-part-2-blu-raydvdultraviolet-digital-copy-combo-pack'

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}