SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5ed6397b54d1c90be5622016349bed27553f32c18d9a4fdf9f88e2a3a4f1fd61' 
  AND token = 'HTibBP/tkFNjD/Bke60OhIeT/jopf+vQzN9MfYtDmAg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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