Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8540a5047ccf20e44dc6af0997c40c1cc948884678449786f073df8263742151' 
  AND token = 'XBP7W+RdLvdkTbmQmobKYhmYK6N2bsN1klJcqeCYNtU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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