Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e744aa354b35ebe322fd706ded159e4a6dc54134ab73c020de631face857eec7' 
  AND token = 'dhnw9S4LV1ipoEc0DZi2QIUGUGnPDyZrt4j5eC1zQAM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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