Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0cc7b2399fe6cffb74d349f471c22d931791b9be39d38a0dac66f49ae93610d6' 
  AND token = 'CM5a/qPerShHfkTv01y2E6cNXx7p/aVudHf4aFfi2bo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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