Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37a755b6af5f44d27bf4e97a158641cf641b44558c333737d2e94462f48393d1' 
  AND token = 'lsrqCFO9ey3WM9k2ImOnlXa23hQyM8Cg5vl4HImlr3Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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