Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f17507d5f26a897c05761d0271ccc549e67a3d0aca56acb66aead55072aa9369' 
  AND token = 'wzaeJZe0pVL3DIziSfwu7NbqrWphRzRTbH4bh/u2jQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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