Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'a5f2f8af5c85f48bb65c04846e090953497888acb55a3b7fba33c2f8b4d38773' 
  AND token = '+knkNcHAKe3+x8fBTI69af2JKjt8xkbJKKPxZkb8OV0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}