Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f08b7b8a83e186325423306175d06730a32cb59003b9bbd4f2a030ce9bbf884a' 
  AND token = 'QS//M/xLNQnJVR/MUaYAFFXXxGLr4kbIf8g/dLSTJss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00110

JSON explain

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