Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '11f9754921d391fcf46611552d64dbeb367dfd240ceaad8fad1b72a1253de971' 
  AND token = 'e34PVC5/oRjELlCuWpWC3+eIOq3esBW2leoISx4P1Jk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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