Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb21c6fa4e35fca1129ad050e39ff045454d6999d778383ffe0ed6cd3d58f820' 
  AND token = 'J207Rsl1hcAZoOTcva0lMNEYd0HEjgNldHuSLqilSQQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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