Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '17ca78220b993cbe6a3f1c16a5e6d04c837ad915ce0791e18b0feaef3e107c0b' 
  AND token = '32IP6VMzrzN1DXD2SXnCBBZwDuUr2BwqQe6i95473bA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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