Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c80d7b58eb616c6d68c451ffabb7cf114fa6db7f117ad24dacc7b4c556071016' 
  AND token = 'Q5LouykqZp2lbyyrDJFkZzP6Z6wCMlUZnHzLE8nwc7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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