Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22e3cd6bf5d5f8bf16caaf88465a41e37fa9d38665d076ea1fe4266ca50f2077' 
  AND token = 'p3/qcArwahJ72d+TYEvdXChfhxF/DEfTxAlaUHJP+eE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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