Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e67a506242517801ca54704eae7f81c99f51ced6940d9e6324ff0dcba8cb7f5d' 
  AND token = 'TBYihUDYal3vCd7yUm2EzWj2eRDwGOJjJEa1fHaBCPI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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