Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2578565ccea78a374d59ee629c1b33804d51733c74b06577ede8295e97e68716' 
  AND token = '/m04qxeQNYfHfdOneRXqABf5ov7lm1Bw4KVZBHyNA6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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