Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '194a9ab714ca52203959f69c3f4ddf1b119ad4ea2633adcff4daae66f29332ce' 
  AND token = 'clAZdUH6TfxLbev7MONvcG7cRAKOXlQ2X5AVgk/s1sE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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