Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42adfece850a56c307a13d731bcc0bf3372a53ed93b2677437f0d63705e4399e' 
  AND token = 'ha6rkhKnz7X8scMzooRVj/BaLVB6R7TCF+uoBWtCRQ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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