Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28854c6ddf98b4d51ea4221a7fe3707ac2e83d8ab9b239d9c6943ec8e21139b6' 
  AND token = 'wF0uNoPTonalIOTX+ioLj5hSlp31v1zgiklKLavheeE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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