Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0958337563401b9d9e8e84ef00bfd8b3acfeb65b0dd6ed7e33eb91e08f76f624' 
  AND token = '8T2KY55cXdVdUDgez4k3VFHJit65iBr86CymN9ekAkU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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