Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9c7e69df2fb13512e104d4ccb02fc8d71458dd129f90f358aaca173511c53231' 
  AND token = 'CR0PbguFGY56DdPnI3/eClbdJ8LXdkJrDdt43Snf2hc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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