Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c79adccfbe956a2d05a66b6dbd1396bc222acbef8c860cf16cac064b714d193' 
  AND token = 'Z0UpeXzyGtM8he3nFgFbOnhHFewZn1aVjROOf/Ckdl4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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