Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f184917635d57937c6c73c8b7b0b9d537c1487b3837cae194e92562a69a554e7' 
  AND token = 'GT3V/4ZMjdP07mI0N08RpzcH6y7WXRhoEiaS9j8ikDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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