Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cbf95362b938c46889c0bcecd9c9ae8963196adf3dc194161201c168b972fe88' 
  AND token = 'xYr6PrJ+9Bb9TRGEt4Yug+I8RXm4m9XLJ39wQd6rjUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}