Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc0694e429f09440ce5dfc66963c28c8c4ce2193fe0bfe4e86675cb716c27916' 
  AND token = 'XHrqyg9i5vWvZnViw6pP5eNUXZm79K7oPT28Q3KuR1s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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