Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db03386bb727faefd2cc7f32d1f9099c9c6e02d42d8572f1ec47468b3e54a8e1' 
  AND token = 'dQHfxQrYYOAUGpbESXREn9HsgRYHoeDlvhDUlgn75ro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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