Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39489e1dae4b0e7e58d2590ae66580764555bb253bfe62d02df0bfc77e537803' 
  AND token = '1wBUUg/ptVX2V52oAAYusnOuR/k7ITu8cUTlaE7gI8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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