Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f22ed8d39f695f0c42160942743d68524e97e6d462f171b4ce28a799d41c224c' 
  AND token = 'dNA94Ro7T7mV5hYf+yQHb+lShsK7935AOwkYk19hBBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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