Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57a4a750a3cf49650b8e2349c777b478038d61558aedaf98a5e35b3a27ecf221' 
  AND token = 'tY78MPBoH9Q9yAUdY00HIj4E9mAwKNX0y36kgEHTsxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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