Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9aa4adf3e9e366fb84d8d4e8eab87c52e3228f18deaa8b60f0e7e068d8adbde7' 
  AND token = 'JXCbNpVM5PeYWRzYk9GpeE2W8VnoTS7Wu15j7CfDaaY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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