Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e41177776b7c4e68dc95d06948f80e039214cefb817a1a07bfb4c9883093d16f' 
  AND token = '0dtfWqaC7Kl8UBD7drq0UOhlxBLAPCMQ9sj2kbQOzYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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