Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63ce6e8333fcb0d4585ad7f1632f14eab1b9a6e43bda1cf8a5db0d8fe9ebbf8b' 
  AND token = 'aFnrx/cYyIPbitG8dgcc0YnUYFwLngC9CbbxJpO6g9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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