Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b767cd7c4ec75deb089a7bf9ed277c95a80126b96486603c1a4cec37382f8bae' 
  AND token = 'dzV0O38RoL6rQAK80fiRej+oCmf3iHQl+4b7aDmH/ug=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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