Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5fe26df4f182ae9355e1bcef7721d50c56bca61bbb63ca2aebcecc6a041181e2' 
  AND token = 'QMko2lbhzwSJieRdzQMANJfNOrNxV+8AOpXkzm5y6go=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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