Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e95d4c8fdc90fb70404cb77e107688fb503818d930d8e5a9179ebef5421b3cbc' 
  AND token = 'OsFnVo+PM3lWEEvwnKX2+xctRrOk657KYwnQQu3Qf+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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