Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad07c7d511d4a3350a631841586725c51812c11baae1c8a6ffc7888fe38a3831' 
  AND token = '5UAwe3SsrAOAXqD6n0mGd1+ZtzyYVwgpvrxh32zO9U8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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