Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '044677f90ee5c09ec86dfafa462e7aa6fc426beb53d541940eee59ba0357ecbb' 
  AND token = 'BrM3uiJNJFyJprdA195QETp8JqjT6Fk1Mj0MT8DUp/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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