Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88085fc816bebe41d93ad9d29d1ea4b311c581ed7c171c5f84f45bd0f58a27ed' 
  AND token = 'lZfIDJGTaITIj2DtdEvUe7G34WsvDICq3L2rmu+tPtI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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