Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '866798373068ac790f50585ca6509cabcc542dd2259f3291cee49683f24b396d' 
  AND token = 'suyxENE86niWfcObzitLeQ2JB7OwSdo15J17qgMOdoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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