Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5de67eb4fe1a4fbfece846b9091e4521eb9d063a3379648993cf5cc54a54c931' 
  AND token = 'k+/viQQ0G3f10uCBwSFIyh9c52gHDsWXnpTJfSirkBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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