Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ba124da12907f0408150b0dbbf25dd6eb2d8ce9e23c54b3c16a2b7dc575c625' 
  AND token = 'IaQ7bXLxVJIkxuYaW/Efk9lLfsPaNVqYop9uTqWtrD0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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