Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30ff60f62cc1503ed4ea0c27024acc4af860258829fe8f3cdef41c3ee83bc62d' 
  AND token = 'q85MaINVY8RVoNTPKae3Ii4zykzU7pyRkv53zMkbBq4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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