Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '829d0e2e8a70ca7c70b396d83c990b5774f174132cbf8266235395a96b79c6c6' 
  AND token = 'h26CwL8BXX3wVK+VSENp7HfHwsQ0wEx6TniiJTpgVIM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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