Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '730424c8fbfdbebd1f8cf578bbb7df88077d88d916ec7fefe9349fb888adcd90' 
  AND token = 'lKxrD+zk+zppfpL40iH2SqQMuxkN5kuDA0YWtelxIPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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