Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd6d5deebc422293a98d7ffea1f7b4fc01c4ebd2c7aacf782a2b67cc23c695622' 
  AND token = 'tckXqMWQB2e94BEcu9JMTGBRtrxeF4gev1M2AP8jdxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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