Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '484d4f46bf6dbed3f125c142a9c3646838002c8bd367d8effd47fd505e86d816' 
  AND token = 'i4RE0pjz9C1XXyC0AvnrG3QyDRwe5RgJlTQRxqf0bT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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