Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f1493e6d20ac02bbb969e4da4d2c55cecf1008b077c078516f03f314eb94edf' 
  AND token = 'dkQ3VGN7M0J1kdjjj/6OX7Q3gopAVwRnjZIk0CZrlg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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