Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13000cf4677c0670dfaec9e3a32cf70df0f3564a62a7e8ed2322ab4827a36b62' 
  AND token = '4t26PMxPpOnwG0lzMVj0Ri+5w6TcUx0AYi/fEVKMFsU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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