Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49b72a393b402ad2abdec6094193404c5744fc21e88b06f50f1a3fc4fed90bea' 
  AND token = '+Go8WQhQvWFN6hwlU1DkhwSJBfyMe/suHUjt/jde0fo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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