Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59f32b42e8091d45b50d42d83faa1e3e675f66580857e3411710c8ace8386fff' 
  AND token = 'uSk9/nutX9hM/+SFGvFS/U7JEXA+E1F0pxmEWnq1ICE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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