Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04edbebe8df0cdc475c95855111098c8d99e6effc00305dc63626169bcb85c03' 
  AND token = 'n4/PZZ1d0VXetiLE6zPq5xJfa3BEyu5EhZ+L4uNabo8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}