Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cb5c37592e83d9d4f99d4030dd99153773307060e67dc0e66cef3beba949cc3' 
  AND token = 'rEKNLydEKcKdv6KeyJd8lcXw1YMLPX9g9tTOqTw8qWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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