Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d47c5ee2b8f11f9815da55e54ae0cab514e4b8acd59dc44361090fcca3b0708' 
  AND token = 'lwNu8L0WFAUMfZHwobwoVs+XWte+4Zt2bN5qbEl22ZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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