Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17b74a4fc84ce946aa8e135fd06e16345c779ae51b3f5e54cd5225270521ee19' 
  AND token = 'BwsorKuaiOmobbGElmuPsrUdzxyZ3ZsDNBK6HxWvHfw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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