Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b63862308aa148f4e297e0d5a07b03f74b80bce7975b49f77009a791cded5d0c' 
  AND token = 'ZppPejKGKJKB/921E7nvr5tySvsTaED10McqourmQRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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