Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de9f7d29334e5e7f9e08de43573793ed1affa41195cb6de8988feb05581d58d0' 
  AND token = 'kSdT8S7FMdVuOciB2xm+K2zRM4Ok0JRaynrFrsPGaXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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