Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fa27cf5789010f9c76d484bcf6e5779c6d47da662fc39a81ed74010011cc6cdd' 
  AND token = 'IcioIgPwtwyR0XsozoBifImN6f9owHRd5lwqzGnolZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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