Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b10815cc7bd548fec53dfdb0752bde3c25a8754c79e4c2eb7619fef6a209a5c3' 
  AND token = 'HdB2+/g0Vw980zwlm2OAYELyIQ06bkrjo8FeAXueFHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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