Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10857db1aa904cea1003d5bf81fc87abd51f70be22d44454e698630df5e6a129' 
  AND token = 'JvuMZQbH9e0WDZfEFtJU7xjGdaVfrege0ouWFjuqo5I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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