Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea2f34cfb31553843cfb081e8e807216504ce53c3d3849e714c6e6915a0b4923' 
  AND token = 'KV9rpU+m4LKvAyrgSl6SBP1ZTos+08ZCq8v79WlR9kg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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