Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '800ae4f7dbf8cae0777ca19f1d17e1c7e617c8ee4dc786be4e95c38b5b8c52f4' 
  AND token = 'ddZr6D9JLUzmZGToSDJ79lA60KihJja5aXOTr46dQeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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