Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '71a462261a955fd80f6f4a0f58c5e1ca9f1a71409271ca83482bcac27471f139' 
  AND token = 'TtO032TOsOv9OKtBhu3HQhTScgnRG3LJu5WvErIiLzE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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