Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cc49d0d8fc7134994674d4a6e2c137fd3630a19a001115e935380d0d6a015db' 
  AND token = 'LwXnejwXAW4ZZN7HALczj5OrjgvUQNclcKjsrfDksMA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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