Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eb6b970a735f3c767da1955b60f3664f3f77cb8dd5bbe7c1852b2f44140a08a0' 
  AND token = 'kD9W7Rqkh0VS/qwVaOm2/oRsmV5DnZtfabKdK4Oa5/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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