Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7284290e6f285f648e7c0cce3fdb1112fe82d22c4a7f61e1819ccc215eecb93d' 
  AND token = 'b71fsLCFvGY5/78gkaYNxZMvmJ0i/+9xbRaXPQ+53ZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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