Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40650a19c9c3dd4ca07efb205e66260a50aade1b71cd4590c08d137e8704b191' 
  AND token = 'SXS+VEL0bTJIMWCsBcYJjOEvAH6HuVq/RMyVP93XFJ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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