Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b24dc873cff49148b8bc1bb17aeec3a100531230df3f519e315135cfcdc58e1c' 
  AND token = 'HbxtxJOkY7+YlbLaWzG0Vq3hAAAA+VHeCvD7vz5goVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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