Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed4160dcc061da1a08c7c127a067c9354073a3336554e1a9ba222b780c3db60e' 
  AND token = 'ni8fqlEFXmi2i9qnzcqh98InGNjxnZu+VO5GiPA8paw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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