Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c77e301ca31ed40dae6a3f4233299e929ca95cc33c8eaad363a911e97370cc87' 
  AND token = 'GLokeKcwQI838COhXHklQ+yUdDWxA9b4Q+ow5WJ410k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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