Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae07e921002146247b9ca92d74818500a33a8cb01b6f0f7ffb8279c8a2080467' 
  AND token = 'VJVjsCx+4f1eCvgCbmyULfBjuSrXKILJGX+keN80zJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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